Cylindrical Roller Bearings SKF NU210 ECP/C3

The SKF NU210 ECP/C3 single-row cylindrical roller bearing, measuring 50x90x20 mm, provides radial support with a slightly increased C3 clearance.

The NU210 ECP/C3 cylindrical roller bearing is a single-row roller bearing designed for radial loads in industrial machinery. SKF manufactures this model with an optimised internal design featuring a lightweight polyamide cage. The NU design allows the inner ring to be removed from both sides, which simplifies the separate assembly of the inner and outer rings. As an open rolling bearing without sealing washers, the component is designed for an operating temperature range of –30 to +120 degrees.

In which installation situations is the NU210 ECP/C3 cylindrical roller bearing used?

As a floating bearing, this design compensates for axial changes in shaft length without constraint, as the inner ring can move relative to the roller set. Thanks to the line contact between the rollers and the raceway, the bearing can accommodate high radial forces. It is used in bearing arrangements designed to withstand purely radial loads, where no axial guidance is required. As the outer ring has no groove or lubrication bore, the lubricant is supplied directly via the bearing housing.

What do ‘polyamide cage’ and ‘C3 clearance’ mean in the NU210?

The polyamide material reduces the weight of the cage and promotes smooth, low-friction operation. The suffix ‘C3’ indicates a slightly increased radial clearance compared with the standard version. This additional internal clearance helps to prevent the rolling elements from becoming stressed if temperature differences occur between the shaft and housing during operation, or if tight fits are selected. With dimensional accuracy to P0 or ABEC 1 and running accuracy to P6 or ABEC 3, the component meets defined tolerance specifications.